/*
 * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
/*
 * @Hardwares: M5Core + Base LAN PoE/PoE v1.2
 * @Platform Version: Arduino M5Stack Board Manager v2.1.3
 * @Dependent Library:
 * M5Stack@^0.4.6: https://github.com/m5stack/M5Stack
 * M5-Ethernet: https://github.com/m5stack/M5-Ethernet
 */

#include <M5Stack.h>
#include <SPI.h>
#include <M5_Ethernet.h>

#define SCK  18
#define MISO 19
#define MOSI 23
#define CS   26

//  01 05 00 01 02 00 9d 6a
char uart_buffer[8]    = {0x01, 0x05, 0x00, 0x01, 0x02, 0x00, 0x9d, 0x6a};
char uart_rx_buffer[8] = {0};

char Num                   = 0;
char stringnum             = 0;
unsigned long W5500DataNum = 0;
unsigned long Send_Num_Ok  = 0;
unsigned long Rec_Num      = 0;
unsigned long Rec_Num_Ok   = 0;

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
IPAddress ip(192, 168, 1, 177);

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);

void setup()
{
    // Open serial communications and wait for port to open:
    M5.begin(true, false, true);
    M5.Power.begin();
    while (!Serial) {
        ;  // wait for serial port to connect. Needed for Leonardo only
    }
    SPI.begin(SCK, MISO, MOSI, -1);
    Ethernet.init(CS);
    // start the Ethernet connection and the server:
    Ethernet.begin(mac, ip);
    server.begin();
    Serial.print("server is at ");
    Serial.println(Ethernet.localIP());

    M5.Lcd.println("M5Stack W5500 Test");
    M5.Lcd.println(" ");
    M5.Lcd.print(Ethernet.localIP());
}

void loop()
{
    // listen for incoming clients
    EthernetClient client = server.available();
    if (client) {
        Serial.println("new client");
        // an http request ends with a blank line
        boolean currentLineIsBlank = true;
        while (client.connected()) {
            if (client.available()) {
                char c = client.read();
                Serial.write(c);
                // if you've gotten to the end of the line (received a newline
                // character) and the line is blank, the http request has ended,
                // so you can send a reply
                if (c == '\n' && currentLineIsBlank) {
                    // send a standard http response header
                    client.println("HTTP/1.1 200 OK");
                    client.println("Content-Type: text/html");
                    client.println("Connection: close");  // the connection will be closed
                                                          // after completion of the
                                                          // response
                    client.println("Refresh: 5");         // refresh the page
                                                          // automatically every 5 sec
                    client.println();
                    client.println("<!DOCTYPE HTML>");
                    client.println("<html>");

                    client.println("<body>");
                    client.println("<h1>M5Stack W5500 Test</h1>");
                    client.println("<br />");
                    client.println("<p>Please click here</p>");
                    client.println("<a href=\"http://www.M5Stack.com\">M5Stack</a>");
                    client.println("<br />");
                    client.println("<br />");
                    client.println("<br />");

                    client.print("W5500 Counter Num :");
                    client.print(W5500DataNum);
                    client.println("<br />");
                    client.println("<br />");
                    W5500DataNum++;

                    client.print("Rec_Num_Ok Counter :");
                    client.print(Rec_Num_Ok);
                    client.println("<br />");
                    client.println("<br />");

                    client.print("Rec_Num Counter :");
                    client.print(Rec_Num);
                    client.println("<br />");
                    client.println("<br />");

                    client.println("</body>");

                    client.println("</html>");
                    break;
                }
                if (c == '\n') {
                    // you're starting a new line
                    currentLineIsBlank = true;
                } else if (c != '\r') {
                    // you've gotten a character on the current line
                    currentLineIsBlank = false;
                }
            }
        }
        // give the web browser time to receive the data
        delay(1);
        // close the connection:
        client.stop();
        Serial.println("client disconnected");
    }
}
